Under the Articles of Confederation, Congress lacked the authority to regulate commerce, making it unable to protect or standardize trade between foreign nations and the various states.
WWI was caused by many things, among them was the assassination of Franz Ferdinand leading to the Austria-Hungary empire declaring war on Serbia which dragged most of Europe into the war due to alliances. The U.S. entered the war due to Germanys war tactics and the Zimmermann note.
Answer:
The 4-2-1 problem surrounding the one-child policy means that only children will have to bear the responsibility of supporting both of their parents and, sometimes, all four of their grandparents in their old age, as they cannot rely on siblings to help them care for their aging family.
Explanation:
B, because when Japan attacked China, China unified to fight a common enemy.
